Winfield s



(No Model.)

W. S. OHEDISTER.

PERMUTATION LOOK.

Patented July 12, 1892..

DH 0 T N E V N ATTORNEY mum-mum, msn

UNITED STATES PATENT OFFIGE.

' WINFIELD S. CHEDISTER, OF NEWARK, NEW JERSEY, ASSIGNOR, BY MESNEASSIGNMENTS, TO WILLIAM SOHLEUSSNER, OF BROOKLYN, N. Y.

PERM UTATlON-LOCK.

SPECIFICATION forming part of Letters Application filed December 2,1891.

To 0. whom it may concern:

Be it known that I, WINFIELD S. CHEDISTER, acitizen of the UnitedStates, residing at Newark, in the county of Essex and State of NewJersey, have invented certain new and useful Improvements inPermutation-Locks; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to permutation-locks of the type in which theunlocking is accomplished by means of devices whose move ment isregulated in accordance with sound indications; and it consists inproviding such locks with simple and accurate means for controlling thepermutation appliances. Locks of the same general class have beenpatented to me under the Nos. 273,466 and 286,903, and under therespective dates of March 6, 1883 and October 16, 1883; but theapparatus is very much simplified by my present invention, the detailsof which will be fully understood by reference to the accompanyingdrawings, in connection with the subjoined description.

In the drawings, Figure 1 is an elevation of my lock secured in place.Fig. 2 is a vertical section along line 0c 00 in Fig. 1. Fig. 3 is arear elevation of my lock removed from its supportj Fig. 4 is a frontView of the same with the inclosing case removed and with some oftheparts shown in section. Fig. 5 is a section along the line y yin Fig.4.. Fig. 6 is a section along the line 52, looking in a directionopposite to that in which one looks in examining Fig. 4. Fig. 7 is adetail of the click-wheel which forms a part of my invention, and Figs,8, 9, 10, and 11 are also detail views;

Referring to the drawings by letter, A is the key or handle of my lock,which passes through the wall or support B, to which the lock isapplied. Outside the said wall or support and surrounding the said keyis an escutcheon C, which is secured in place by screws 0 c a passingthrough its rim. As shown in Fig. 2, the key has secured to it by a pinor rivet b a disk D, on which is a circular flange d, against which theinner end Patent No. 478,567, dated July 12, 1892.

Serial No. 413,791. (7N0 model.)

of the escutcheon rests, thus preventing the key from being withdrawnwhile the escutcheon is in place. Behind the wall B the key passesthrough the inner lock-case E and also throughaslot f in the click-wheelF. The 5 5 click-wheel has on its inner side a ring G. provided with anotch g and supplied with a pin g. It is evident that the click-wheelwill turn every time the key is turned. Be yond the click-wheel is a boxH, secured to the rear lock-casing E. The ring G on the click-wheelprojects into this box. The box does not form acomplete circle,'but isbroken at h, as shown in Figs. 4: and 6. Within the box is a series ofpermutation-ringsland J, each of which is held in place by a separatespring K. Now each of these rings has one or more pins 71 2', whichco-operate with corresponding pins on adjoining rings. Thus the ringIhas two pins on its outer surface, between which plays the pin g on thering G. On its inner surface the same ring I has a single pin,whichplays between two pins on the outer surface of the ring J. The ring Jhasupon its inner surface a longer pin t", which extends through 75 anopening in the rear case Eand into a slot 0 in a disk 0, which isslitted at one portion of its edge and a part is bent down to form acatch 0. The disk normally rests Within the mouth of a cap P, beingconstantly pressed 8o outward by a coiled spring p within the said cap.On a ledge r in the said cap is a'pin r, which forms a detent designedto co-operate at the proper time with the catch 0'. It is clear that themovement of the key will give motion first to the click-wheel and thenintermediately by means of the co-operating pins to thepermutation-rings and the disk 0. Now however far the disk 0 is moved itwill not bring the catch 0 into engagement with the detent 1" so long asno inward pressure is exerted upon it, since the spring p serves to keepthe disk far enough away to prevent such an operation. If, however, thekey is pushed in at the same time that it is turned, its inner end willpress the disk 0 inward far enough to cause the engagement of the partsmentioned.

On the outer portion of the case, but within, the said outer portion, Isecure a spring 3, mo

which projects out into line with the teeth on the click-wheel and somakes a sound or click when the wheel is turned.

At T,I show the hooks or catches of the look, at U the bolt, at V thespring for throwing the bolt, and at W' the usual tumbler. The latterrests upon the periphery of the permutation-rings or upon one or more ofthem .until certain slots 0 v in the said rings are brought into aposition corresponding to each other and to the notch g in the ring G.This operation of bringing the said notches into the proper position forreleasing the bolt is obviously accomplished by certain predeterminedmovements of the key adapted to operate each ring to the point desired.Such movements are accompanied by clicks,which can be heard by theoperator. It is obvious that, given the proper starting-point, the sameseries of operations will bring about the desired result every time. Theobjectof the cap P,the disk 0, and the connected parts is, incombination with the other parts described, to furnish the properstarting-point.

In operating the apparatus the first thing todo is to press in on thekey (sufficient play for that purpose being given between the wheel Fand the box H) and then turn to the right until the catch 0 is broughtinto engagement with the detent 4''. Then the key is released and turnedwithout pressing in either to the right or left, or both, according to apredetermined code, depending on the number of clicks heard. The cap Pis provided at one point with a mark it, which, in combination with adial M on the outside of the lock-case and in combination with certainradial lines on the said dial, serves as a guide for changing thecombination at will. The cap is held in place by screws to to, whoseheads catch over the edge of the cap. Ordinarily the arrangement is suchthat the mark it stands in alignment with the radial line 0, thuscalling for certain predetermined movements in order to release thebolt; but the screws to 20 may be loosened and the cap moved so as tobring the mark it into alignment with any other radial lines, as 1, 4,7, or 11. In that case it is evident that a different series ofmovements will have to be performed, and that therefore a newcombination will have been secured by such alteration.

The number and arrangement of the pins on the permutation-rings and thenumber of teeth on the click-wheel and on indications on the dial may beVaried at will.

What I claim is-- 1. In a permutation-lock, a permanentlyat-tached keyand a click-wheel operated thereby, in combination with a series ofpermutation-rings and a tumbler controlled by the said rings, the saidrings being held within a suitable box and being operatively connectedwith a click-Wheel, as and for the purpose set forth.

2. In a permutation-lock, a click-wheel and an operating-key, one ormore permutationrings operatively connected with the clickwheel, a diskconnected with the last ring of the series and pressed outward againstthe key by a suitable spring, a catch on the said disk, and a detentnormally out of the path of movement of the said catch but within itspath when the disk is pressed inward by the key, as and for the purposeset forth.

3. In a permutation-lock, an operating-key joined by suitableintermediate apparatus, with a device, as O, carrying a catch, as 0,which engages with a detent, as 4, when the parts are operated underpressure, the said detent being held in an adjustable cap, whereby themovement of the key is susceptible of adjustable limitation, as and forthe purpose set forth.

4. In a permutation-lock, a cap attached to the inner case thereof onthe outside, the said cap carrying a detent for fixing the startingpointfor the combination and being capable of adjustment, in combination witha scale or dial on said inner case, as and for the purpose set forth.

5. In a permutation-lock, a series of co-opcrating rings held within abox by suitable springs, in combination with a click-wheel carrying aring capable of entering the said box and connected with theoperating-lock key, and a disk carrying engaging devices,

:the said disk being normally held out against the key by a spring andthe said key having a reciprocating play, as and for the purpose setforth.

In testimony whereof I have signed my name,in the presence of twowitnesses, this 28th day of November, A. D. 1891.

WVINFIELD S. CI-IEDISTER.

WVitnesses:

GEORGE O. SwAsEY, G.'H. STOOKBRIDGE.

